EP 1487038 A3 20100217 - Positive electrode material, its manufacturing method and lithium batteries
Title (en)
Positive electrode material, its manufacturing method and lithium batteries
Title (de)
Positives Elektrodenmaterial, sein Verfahren zur Herstellung, und Lithium Batterien
Title (fr)
Matière d'électrode positive, sa méthode de fabrication et batteries au lithium
Publication
Application
Priority
JP 2003166685 A 20030611
Abstract (en)
[origin: EP1487038A2] The invention provides a positive electrode material for lithium batteries in which the discharge rate characteristic and the battery capacity are hardly deteriorated in an environment of low temperature of -30 °C, a method of manufacturing the positive electrode material and lithium secondary batteries using that positive electrode material. The positive electrode material of the present invention comprises secondary particles (2) composed of a network of primary particles (1) wherein the sum of the contact lengths of the primary particles (1) is equivalent to 10 to 70 % of the length of the whole periphery of the primary particles (1) in a section of the primary particles being in contact with each other. The voidage of the secondary particles (2) is preferably 2.5 to 35 % of the sectional area of the secondary particles (2).
IPC 8 full level
H01M 4/48 (2010.01); H01M 4/50 (2010.01); H01M 4/505 (2010.01); H01M 4/52 (2010.01); H01M 4/525 (2010.01); H01M 10/05 (2010.01); H01M 10/0525 (2010.01); H01M 10/0566 (2010.01); H01M 4/62 (2006.01)
CPC (source: EP KR US)
A47G 19/23 (2013.01 - KR); H01M 4/0435 (2013.01 - EP US); H01M 4/131 (2013.01 - EP US); H01M 4/1391 (2013.01 - EP US); H01M 4/505 (2013.01 - EP US); H01M 4/525 (2013.01 - EP US); A47G 2400/02 (2013.01 - KR); H01M 4/043 (2013.01 - EP US); H01M 10/052 (2013.01 - EP US); H01M 2004/021 (2013.01 - EP US); Y02E 60/10 (2013.01 - EP)
Citation (search report)
- [XY] JP 2001085006 A 20010330 - TOYOTA CENTRAL RES & DEV
- [Y] JP H08213015 A 19960820 - SONY CORP
- [X] JP 2001155729 A 20010608 - SUMITOMO METAL MINING CO
- [X] EP 1207572 A1 20020522 - SUGNAUX CONSULTING DR [CH]
- [X] JP 2002042811 A 20020208 - SUMITOMO METAL MINING CO
- [A] JP 2000243394 A 20000908 - TOSHIBA CORP
- [A] JP H07245106 A 19950919 - YOSHIO MASAYUKI, et al
- [X] WO 02086993 A1 20021031 - YUASA BATTERY CO LTD [JP], et al
- [XP] EP 1391950 A1 20040225 - YUASA BATTERY CO LTD [JP]
- [E] EP 1587156 A1 20051019 - NIKKO MATERIALS CO LTD [JP]
- [X] EP 1309022 A2 20030507 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [X] EP 1296391 A1 20030326 - MATSUSHITA ELECTRIC IND CO LTD [JP]
- [X] EP 1220343 A2 20020703 - SHIN KOBE ELECTRIC MACHINERY [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL LT LV MK
DOCDB simple family (publication)
EP 1487038 A2 20041215; EP 1487038 A3 20100217; EP 1487038 B1 20130612; CN 100477372 C 20090408; CN 100530778 C 20090819; CN 100565984 C 20091202; CN 101009369 A 20070801; CN 101009369 B 20101208; CN 101009390 A 20070801; CN 101114708 A 20080130; CN 1282265 C 20061025; CN 1574429 A 20050202; CN 1841818 A 20061004; EP 2237347 A2 20101006; EP 2237347 A3 20110302; EP 2237347 B1 20131120; JP 2005005105 A 20050106; JP 4740409 B2 20110803; KR 101116764 B1 20120313; KR 101129333 B1 20120326; KR 20040106207 A 20041217; KR 20110122809 A 20111111; TW 200428693 A 20041216; TW I287889 B 20071001; US 2004253516 A1 20041216; US 2007212602 A1 20070913; US 2007259266 A1 20071108; US 2011127463 A1 20110602; US 7604898 B2 20091020; US 7910246 B2 20110322; US 8097363 B2 20120117
DOCDB simple family (application)
EP 04006130 A 20040315; CN 200410007293 A 20040227; CN 200610075245 A 20040227; CN 200610151752 A 20040227; CN 200610151753 A 20040227; CN 200610151754 A 20040227; EP 10006263 A 20040315; JP 2003166685 A 20030611; KR 20040012182 A 20040224; KR 20110110157 A 20111026; TW 93103946 A 20040218; US 201113023087 A 20110208; US 78722204 A 20040227; US 79780007 A 20070508; US 79780107 A 20070508